Revolver rifle



J. BOCCO REVOLVER RIFLE Feb. 21, 1%33.

Filed March 22, 1932 Patented Feb. 21, 1933 JOHN 130000, 015 CAMDEN, NEWJERSEY REVOLVER RIFLE Application filed March 22, 1932. Serial No.600,540.

This invention relates to certain new and useful improvements inrevolver rifles.

The primary object of the invention is to provide a revolver riflewherein the cartridge magazine is in the form of a revolving chamberhaving cartridge receiving bores therein that are successively broughtinto registry with the bore of the gun of the rifle barrel duringrotation of the revolver chamber, such movement being effected bydevices operated by the trigger mechanism of the rifle.

It is a further object of the invention to provide an interchangeablerevolving magazine for a rifle for the firing of bullets or shells ofdifferent gage and different numbers.

With the above and other objects in view that will become apparent asthenature of the invention is better understood, the same consists inthe novel form, combination and arrangement of parts hereinafter morefully described, shown in the accompanying drawing and claimed.

In the drawing Figure 1 is a side elevational view of a revolver rifleconstructed in accordance with the present invention;

Figure 2 is an enlarged fragmentary longitudinal sectional view showingthe breech {)nechanism and revolving cartridge cham- Figure 3 is across-sectional view taken on line 3-3 of Figure 2;

Figure 4 is a cross-sectional View taken on line 44 of Figure 2, showingthe revolving cartridge chamber in end elevation;

Figure 5 is a fragmentary side elevational view of a part of the triggermechanism and firing hammer with the latter illustrated in firingposition; and v Figure 6 is a fragmentary side elevational view showingthe gun broken for re-charging or interchanging the revolver chamber.

Referring more in detail to the accompanying drawing, there isillustrated a revolver rifle comprising a barrel 10, a stock 11 andintermediate breech mechanism including a breech frame 12 that carries aforwardlyi extending lower tang 13 that is hingedly mounted as at 14: atits forward end to the depending barrel plate rib 15, while theconnection between the barrel 10 and upper side of the breech frame 12includes an upper tang 16 hingedly connected at its forward end as at 17to the adjacent end of the barrel 10 while the rear end of the hingedtang 16 is provided with an opening that is received on the spring catch18 rising from the upper wall of the breech frame 12 as shown in Figure2. The tang connections 13 and 16 between the breech frame and barrelprovide an open sided chamber in which a revolving cartridge magazine ismounted.

A cartridge magazine is mounted in the open space between the barrel andbreech frame and includes a cylindrical revolving chamber 19 having anannular series of longitudinal cartridge receiving bores 20, therevolving chamber being carried by an axial screw 21 that is anchored inthe barrel rib 15, rotation of the cartridge chamber 19 causingthecartridge bores 20 therein to successively register with the barrelbore 10a.

The breech frame12 is provided with an inner chamber 22 that houses thetrigger and The front end of the chamber 22 in the breech frame isclosed by a partition wall 23 and saidpartition wall is provided withopenings through which operating devices for the revolving chamber 19extend. The firing mechanism includes a hammer arm 24 having the lowerend portion 25 thereof pivotally mounted between spaced lugs 26projecting rearwardly from the partition wall 23 by means of the pivotpin 27, the upper end of the hammer arm 24 carrying a hammer head 28provided with a .firing pin 29 that projects through an opening 30in'the partition wall 23 in line with one of the bores 20 of therevolving chamber 19. The hammer head 28 is normally tensioned in adirection toward the revolving chamber'by'means of the coil spring 31interposed between the breech frame 12 and rear side of the hammer head.

The trigger 32 mounted within the breec chamber 22 extends downwardlythrough the 'trated in. Figure 4. 4 .Means is provided to effectrotation of the the revolving chamber 19.

openings 33 in the bottom wall of the breech chamber with the projectingend thereof confined within the trigger guard 34, the intermediate plateportion 35 of the trigger being pivotally mounted upon the pin 26carried by upstanding lugs 37 upon the bottom wall of the breech chamberWith the plate portion located betweensaid lugs. The plate por tion 35of the trigger 32 at the forward side thereof is bifurcated or recessedto provide a bottom abutment Wall 38 and a: lug. 39 pivotally mountedwithin said recess upon the pin 40 has an abutment side wall41 normallyengaged with the abutment Wall 38 of the trigger plate portion underin-- fluence of the. leaf spring 42. The lower side of the lower endportion 25 of the hammer arm is provided with anarcuate face 43terminating at one end in an abutment shoulder 44 that is normallyengaged with the corner portion 39a of the pivoted lugl39, as shown inFigure2.

eans is providedtoprevent rotation of the revolver chamber 19 during thefiring of the gun and includes a pin 45 extending longitudinally of thebreech frame chamber 22 adjacent its upper end, the pin 45 slidingthrough slotted opening 46 in the upper end of the hammer arm 24 forpassing through an opening in the partition wall 23 that is enlarged atits rear side as at 47 to house a tensioned spring 48 engaged with acollar 49 surrounding the pin 45 and fixed thereto with the collarengaged with the hammer arm 24 for normally holding the pin 25 inretracted position. The plate portion 35 of the trigger 32 carries anupwardly extending arm 50 which engages the rear end of the pin .45toproject the same forwardly through the opening in the partition vwall23against the tension of the spring 48 with the forwardly projecting endof the pin 45 received in'a socket 51 in the rear end wall of therevolving chamber 19, a socket 51 being associated with each cartridgebore 20 as illusrevolving chamber 19 to aline the next succeedingchamber bore 20 with the barrel bore 10a and includes an upwardly curvedarm 52 projecting forwardly of the trigger plate portion 35 and throughan opening 53 in the v partition wall 23 with a pawl 54 pivotallymounted as at 55 upon the forward end of the arm 52, the pawl 54 workingover the annular ratchet face 56 formed on the rear end of The triggerspring 57 is engaged with the lower side of the arm 52 for normallyholding the trigger 32 in its forward position and the trigger arm 50 inits rear position as' shown in Figure 2. The arm 52 is laterally offsetrelative to the trigger plate portion 35 as shown in Figure 3 to causethe pawl 54 carried thereby to'engage one side of the ratchet ring 56.

When the trigger 32 is operated, the trigger arm extension 50 firstengages the pin 45 to project the forward end thereof into a socket 51for holding the revolving chamber against rotary movement, continuedmovement of the trigger causing the lug 39 carried thereby to have itsshoulder 39a. engagevthe abutment shoulder 44 upon the lower end 25 ofthe hammer for moving the hammer arm 24 against the tension of thespring 31, continued movements "of the trigger causing the shoulders 39aand 44 to be disengaged with the spring 31 forcibly throwing the hammer28 in aforward direction and causing the firing pin 29 to strike thehead of a cartridge in the bore 20 of the revolving chamber 19. .Duringthis movement, the arm 52 is swung downwardly to cause the pawl 54 toratchet over the ratchet ring 56 and be engaged with the next succeedingratchet tooth thereofso that when pressure on the trigger 32 isrelieved, the springf57- which returns the trigger 32 to operativeposition also raises the arm 52 to cause the pawl '54 to rotate therevolving chamber 19 to position the next succeedin cartridge bore -20in alignment with the barrel bore 10a. Also, during retraction of thetrigger 32, the lug-39 moves upon its pivot pin 40'to escape the edge ofthe abutment shoulder 44, thc lug being tensioned by the spring 42 asshown in Figure 5, the spring returning the lug39-to its operativeposition, limited bythe contact shoulders 38 and41;

It isto be understood that the, revolving chamber 19 is of aninterchangeable character to permit the substitution of chambers havingdifferent sized bores for cartridges or shells and that said chamber mayhave any number of bores formed therein as may be derel and a top tanghinged to the barrel and detachably engaged with the stock providing anopen chamber between the stock and barrel and breech mechanism includinga revolving cartridge chamber disposed in the aforesaid chamber andcarried by the barrel and firing and trigger mechanism carried by thestock. V

- 2 In a revolving rifle, a barrel, a stock having a breech mechanismchamber therein closed by "a forward wall, revolving car tridge chambercarried by the barrer forwardly of the wall, said mechanism chamberhousing a pivoted trigger, a hammer operated by the trigger, a movementarrester for the 5 cartridge chamber operated by the trigger, meanscarried by the trigger for rotating the revolving chamber and said wallhaving openings therein forming communication between the revolvingchamber and associated parts of the breech mechanism, an escapementconnection between the hammer and trigger permitting resetting of thetrigger and operation of the chamber, the rotating means for therevolving chamber including a circular rack on the rear end of thechamber, an arm carried by the trigger projecting through the forwardwall and a pawl on the forward end of the arm engageable with thecircular rack and operative to escape the rack when the trigger ispulled and to engage the rack and rotate the chamber when the triggermoves to reset position.

3. In a revolving rifle, a barrel, a stock having a breech mechanismchamber therein closed by a forward wall, a revolving cartridge chambercarried by the barrel forwardly of the wall, said mechanism chamberhousing a pivoted trigger, a hammer operated by the trigger, a movementarrester for the cartridge chamber operated by the trigger, meanscarried by the trigger for rotating the revolving chamber and said wallhaving openings therein forming communication between the revolvingchamber and associated parts of the breech mechanism, an escapementconnection between the hammer and trigger permitting resetting of thetrigger and operation of the hammer, said movement arrester including atensioned pinextending through the wall, the rear end of the revolvingchamber having sockets therein to successively receive the pin to alinea bore in the revolving chamber with the revolver barrel and an armextension on the trigger for operating the pin in advance of theoperating release of the hammer, the rotating means for the revolvingchamber including a circular rack on the rear end of the chamber, an armcarried by the trigger projecting 0 through the forward wall and a pawlon the forward end of the arm engageable with the circular rack andoperative to escape the rack when the trigger is pulled and to engagethe rack and rotate the chamber when the trigger moves to reset osition.

In testimony whereof I afiix my signature.

JOHN BOCCO.

